title: Associations of self-report measures with gait, range of motion and proprioception in patients with lumbar spinal stenosis.
abstract: BACKGROUND
  Spinal stenosis is defined as neurogenic claudication due to narrowing of the spinal canal lumen diameter. As the disease progresses, ambulation and gait may be impaired. Self-report measures are routinely used in the clinical setting to capture data related to lumbar pain symptoms, function and perceived disability. The associations between self-report measures and objective measures of physical function in patients with lumbar spinal stenosis are not well characterized. The purpose of this study was to determine the correlation between self-reported assessments of function with objective biomechanical measures of function.
  
  
  METHODS
  25 subjects were enrolled in this study. Subjects completed self-report questionnaires and biomechanical assessments of gait analysis, lumbar 3D ROM and lumbar proprioception. Correlations were determined between self-report measures and biomechanical data.
  
  
  RESULTS
  The Oswestry Disability Index (ODI) was strongly correlated with stride length and gait velocity and weakly correlated with base of support. ODI was also weakly correlated with left lateral bending proprioception but not right lateral bending. The SF12 was not significantly correlated with any of the biomechanical measurements. Pain scores were weakly correlated with velocity, and base of support, and had no correlation any of the other biomechanical measures.
  
  
  CONCLUSIONS
  There is a strong correlation between gait parameters and functional disability as measured with the ODI. Quantified gait analysis can be a useful tool to evaluate patients with lumbar spinal stenosis and to assess the outcomes of treatments on this group of patients.
authors.affiliation: Spine and Sports Interventional Center at Shands Rehabilitation Hospital, University of Florida, Gainesville, FL, USA. Electronic address: bconrad@ufl.edu.
authors.forename: Bryan P
authors.initials: BP
authors.lastname: Conrad
authors.forename: Maximilian S
authors.initials: MS
authors.lastname: Shokat
authors.forename: Abdullah Z
authors.initials: AZ
authors.lastname: Abbasi
authors.forename: Heather K
authors.initials: HK
authors.lastname: Vincent
authors.forename: Amanda
authors.initials: A
authors.lastname: Seay
authors.forename: David J
authors.initials: DJ
authors.lastname: Kennedy
mesh_terms: D000368:Aged; D001696:Biomechanical Phenomena; D005260:Female; D020233:Gait Disorders, Neurologic / Q000209:etiology / Q000503:physiopathology*; D006801:Humans; D017116:Low Back Pain / Q000209:etiology / Q000503:physiopathology*; D008159:Lumbar Vertebrae; D008297:Male; D008875:Middle Aged; D010147:Pain Measurement; D011434:Proprioception / Q000502:physiology*; D011843:Radiculopathy / Q000209:etiology / Q000503:physiopathology; D016059:Range of Motion, Articular / Q000502:physiology*; D057566:Self Report; D012678:Sensation Disorders / Q000209:etiology / Q000503:physiopathology*; D013130:Spinal Stenosis / Q000150:complications / Q000503:physiopathology*; D011795:Surveys and Questionnaires
keywords: Biomechanics; Locomotion; Low back pain; Proprioception; Range of motion; Spine